Type-writing machine.



-J. A. WHITCUMR. TYPE WRITING MACHINE. APPLICATION FILED .IUHE 6. 1-910 5 SHEETSSEEET I.

' Patanted Jan. 26, 1915.

J. A. WHITOGMB. TYPE WRITING MACHINE.

APPLICATION FILED JUNE 6, 1910.

L Patented Jan. 26, 1915.

fi SHEETS-SHEET 2 QM W mm W Patented 52111.26, 1915.

5 SHEETS-SHEET 3.

w .sw j

I J. A WHITGOMB.

TYPE WRITING MACHINE.

APPLICATION FILED' JUNE 6, 1910.

J. A. WHITGOMB. TYPE WRITING MACHINE. APPL IOATIO K FILED JUNE 6, 1910. I 1 126 1 $9. Patented Jan. 26, 1915.

5 SHEETS-SHEET 4.

i i wvmwes J. A. WHITGGMK TYPE WRITING MACHINE.

APPLICATION FILED JUNE 6, 1910.

Patehted M1126, 1915 5 SHEETSSHEET 6.

Unrrnn JAMES A. \VHITCQMB, OF McALES'lER 'GKLAHQEEA.

TYPE-WRITING MACHINE.

Specification of Letters Eatent. Pa$gnt fi 7 26 Applicetion filed Jane 6, 1910. Serial No. 585,311.-

I the following is a specification.

.This invention relates broadly to typewriting machines and specifically to ribbon mechanism adapted particularly to typewriti'ng/machines of the folding type.

' \The principal object of this invention is I to construct a ribbon mechanism in such manner that the ribbon will be fed a cloth nite distance during each movei'nent of the key levers, the arrangement of parts being such that the ribbon spools and ribbon vibrator may be folded to abnormal positions and the immediate key actuated mechanism will maintain its normal position in the typewriting machine.

Another object of the invention is to provide a ribbon mechanism particularly adapted for a typewriting machine of the folding type, in which the ribbon spools are carried u-po'n foldable members attached to the machine frame.

A still further object of the invention is to provide a ribbon mechanism for a typo writing machine in which the platc'ncarriage is shifted -through an arc when it is moved from upper to lower case position and vthe ribbon spools are adapted to-be nioved together'w-ith the platen carriage.

A still further objectof thejnvention is to construct a ribbon; mechanism for a type writing machine in which the ribbon spools are directly actuated by a'ratchet mechanism which is shi'ftable with the platen carriage to upper and lower case position.

A still further object of the ini'ention is to-construct a simple spring which maintains botha holding dog a 1i a mo able dog in engagement with the ;;.tchet wheel for operating'a ribbon spool.

Other obiectsof this invention will be obvious and others will be more SpOClilCfillY pointed out in the specification hereinafter by reference to the accompanying: drawings which forms part of this application. and will .he more specifically defined in the claims; lathe zi'eoilicstion .i

the

4 carriage frame also provided with a several figures of the drawings, like nnmorals are used to indicate like parts Figure 1 is an ElGYittlGIl show ng the ribbon spools when the carriage is in its folded relation. Fig. is a, longitudinal sectional elevational view taken substantially on line AB of Fig. 3, with a portion of the type bar and carriage shifting mechanisms omitted. Fig, 3 is a transverse sectional eleva tion. at is a detail showing one ribbon spool in elevation. Fig. 5 is a detail View showing both ribbon spools in eheration and showing part of the means oi actuation therefor. Fig. 6 is a detail plan View show ing the ratchet mechanism ior actuatin ribbon spools. Fig. 7 isan elevation L on lines (3-D of Fig. 3, and shows the relationship of the ribbon. mechanism to the. platen shifting devices.

The typewriting n'rzehine illustrated in the drawings, and to which any ribbon mechanism invention is particularly adapted, is typewriting machine of the folding type wherein side bars 1 and 2 are pivoted to main machine frame. 3 by means stud bolts 5 and 6. The sid bars 1 and 2 a adapted to sup iort a carriage'bed l. n which a carriage frame 8 is mounted for ciprocai movement upon anti-friction roll 9, l0 and 11, which are mounted on t riage bed, and upon which a track i is adapted-to reciprocate. The rear oi the .rail which cooperates with a groove rail 15., fixedly mounted upon the carriage bed 7. The carriage frame is provided with endfraines' 16 and 17, in which is mount-eel .a cylindrical platen 18, and the usual line spacing mechanism 19. A series of key levers i0, Qland 2-3 are mounted in the machine frame upon key lever supporting rods 2 1-, 253 and 2G, and are connected at their rear ends by means of links 2?, with type bars 28, the type bars 2 being supported by means of hangers 29, attached to the r walls of the main fame in a manner known in the art. The key leversjii ii a '22 are provided with coiled. springs 3Q 31 and 35-2 respectively, which are connected with a portion oi a type barrestrE-i; in such manner as toreturn the key levers to normal position when a type bar hasbeen octaated. The coiled springs 30,; 81 and protected by a front board I which is attached to the machine frame by means of screws 35, and extends above the key levers frdm the right to the left wall of the typewriting machine frame. The front of the machine frame is supported upon ,a cross bar 37, which is provided with rubber feet 38. The cross bar 37 performs the double function of providing means for stifi'ening the front of the machine frame, and also providing a sufficient width of surface upon which to attach the rubber feet 38. At the rear corners of the machine frame, plates 39 and 40 are provided, in a manner similar to the cross bar 37, and form a brac ing for the corners of the machine frame and also provide 5 suilicient supporting sur face for mounting the rubber feet ll and 49-, upon which the rear of the machine is sup ported. A space bar 44, is mounted, imme diately in front of the letter keys on the key board, upon rearward extensions 45, which are bifurcated at 46, in such manner as to guide a universal bar 47, which is constriicted of a suflicient length to cover all of the ends of the key levers, as is shown particularly in Fig. 3. Tlu universal bar 47, is mounted upon llnks tit; and 49, which are provided with pairs of lock nuts 50 and 51, by means of which the universal bar 47 may be properly adjusted a definite height above the rear ends of the key levers. It is desirable that the universal bar be some little distance above the key levers that are connected with the type bars, for the reason that upon depressing a key lever the only force necessary to be exerted is a. weight sullicient to start the type bar in its upward movement toward the printing point, and the type bar ivill'l iavfgained considerable momentum before the -key lever contacts with the universal barv that the mechanisms, hereinafter to be described, whichfare operated by the universal bar, are not brought into operation until a certain amount of energy has been stored in the bar mechanism becausoof the momentum ot' the moving type bar, and thus less actual weight will be required to operate the universal bar and attendant mecha nisms than if the universal bar were placed immediately upon the ends of the key levers. ".lhcg links: in and 49 are provided with hooked-shaped portions "2 and 5%, which are adaptcd to be engorged with openings in bell crank levers and 5G, pivotally mounted upon ljirackets 57 and 58, which are attached to the rear wall of the machine main frame. il hc boll crar '5 and 56 carry T-shapcd hcadiu .l 60, which cooperate with vertical h.

or links (iii and The lever links M and bi: are pivotalhr mounted upon a rod (it. the supported upon the iilai'en shift bell cranks G5 and (3H, and which will be more spi'at'iiically described hereinafter. The vertical levers 61 Thus it will be seen aieaiee and 62 are provided with slotted openings 67 and (38, through which the T-shaped headed studs 5i) and extend, in order to communicate motion from the universal bar to the vertical lever links. and 70, are fixedly mounted upon the rear wall of the machine frame and bear against the vertical lever links (31. and 62 respectively, in such manner to force these links toward the front of the machine and to cause the universal bar to press downwardly against the base of the bifurcated forks 46. A transverse bar 71, is riveted to rearward extending portions of the vertical le er links 61 and 62 and securely connects the upper portions of the two vertical links together. A slidin collar 72 is mounted upon a transverse a1 71, and is adapted to contact with a bell crank arm 74, which is pivoted to the carriage bed. One arm of this bell crank lever T l is in. engagement with a notched portion 7 of the ribbon vibrato arm 76, which is retained in norm po' tion by means of a, small coiled spring 77. The ribbon carrying spools are mounted in front of the car iage bed upon the side bars 1 and 2, and are built from composite parts, which will now he more specifically described. Vertically extcnding shafts 78, are set in the side bars 1 and 2, and are adapted to carry hollow shafts T9, to which ratchet wheels and 81 are fixedly attached. Col lars 82 are adapted to set upon the lower portion. of the liollow shafts T9. and rest upon a small shoulder provided upon the hollow shafts 79, just above the ratchet wheels. Ribbon guide bases 84: and 85, are fixedly attached to the side bars 1 and Q, by means of small stub screws which on gage the side llllF-f. The ribbon guide bases S t and "85 are provided with openings, through which the hollow shafts hcreinbbfore described. are adapted to extend. At the rearot the ribbon guide bases there are small upward extending arms 86, which prevent the ribbon from coming incontact with the platen cylinder. The guide bases are also provided with guide n'ien'lbers is? and 88, through which the ribbon is adapted to be fed to the ribbon vibrator 76. The rib bon spools 89 comprise single ended'spools which are adapted to be positioned over the hollow shafts and pass through openings in the ibbon guide bases and contact with the upper ends of the collars 82. Right and left hand threaded check nuts 90 and 91. are adapted to. clamp the ribbon spools upon the collars nuts 90 or 91 is tightened suiliciently to prevent the ribbon spool from turning upon the collars 8'2, it will be seen that the ratchet wheel 80, the collars 8 2'. the hollow shaft 79, and the ribl'zon spool 89. \Vllldlll turn together upon the vertical shaft 78. Right and left hand rctaining'dogs 92 are mount- Leaf springs (39 \Vhon either of the check iii IOU

laq

masses ed upon the side bars 1 and 2 respectively. and are adapted to engage the teeth in the ratchet wheels 80 and 81 respectively. The retaining dogs 92 are mounted in front of the ratchet wheels and bell crank levers 9-1 and. 95 are also respectively mounted upon the side bars 1 and 2, to the rear of the ratchet. wheels 80 and S1. The bell crank levers are adapted to carry upon one arm of the hell crank, actuating dogs 96 and 91'.

' All of the dogs including both the retaining dogs and the actuating dogs, are provided with upward extending. portions through which the ends of the springs 98 and 99 are adapted to pass, and thus force the dogs into their operative relation with the teeth of the ratchet wheels. E ch. of

the hell cranks 94 and 95, is provided with lever links 61 and 62. and each of the extending portions of the arm 100 is guided in its path by means of a small bracket 101, that is mounted upon the carriage bed.

From the hereinbefore described structure it will be seen that for each actuation of the printing key levers. the universal bar is raised and through the several connected links and bell cranks, the vertical lever links 61 and 62 are swungat their upper ends'toward the rear of the machine frame and in this rearward movement the upper ends are in contact with the extended arms 100 of the bell cranlclevers 94 and 95,-thus causing the bell cranks to be actuated and each ratchet-wheel to he turned a distance or 91 he screwed down solidly upon its'respective ribbon spool and the other check apt. he left loose in order that the ribbon spool may be allowed to turn upon the here irlleiore described hollow shaft. lVlien it is desi able to reverse the longitudinal motion of the rihhonQthc check not which has been tightly seated. is unlooseued. and the check nut which has been loose is screwed down tightly upon the ribbon spool.

The side bars 1 and 2, are shifted from upper to lower case, and to a third position for figures and characters, 'by a mechanism I which will now he more specifically de- =-sc1'ibecl. To the left ofthe key board there are loeatedtwc key-5,1 1J2 1111 which are mounted upon key levers 105 and r 'l hese key levers are car- 1 106 respectively. ried upon the key supporting rods 21 and respectively. The key lever 105 is connectedby means of the link :07, with the platen shift bell crank 0 by means of a pin-and-slot connection. The shift key 106 is also connected. by meansmf a link 108, to the platen shift ell crank, and the conne'ction in this case is also-made by a pin-andslot connection. A cam actuated stop memher 109 is pivoted to the machine side frame at a point 110, and at its upper end carries two adjustable stop screws 111 and 112. The forward portion of the cam actuated stop member is provided with a cam face 1141, which is adapted to cooperate with a pin 115, carried in the outer end of the key lever 106. The bell crank shift key levers ($5 and 06, are connected at their upper ends with coiled springs 1.10, that are fastened to brackets 11?, which are'attached to the side frames of the typewriting machine. T he coiled springs 116 are of a suiiicient strength to substantially counterbalance the weight of the carriage and attendin mechanisms which are shifted when the shift mechanism is operator. Upwardly extending shift links 118 and 119, are carried bythe outer ends of the platen shift bell cranks upon the transverse rod 61 which rod also carries the vertical lever links 61 and The upwardly extending shift links 118 and 119, are each provided with a slot 12-1, through which are adapted to extend T-shaped 1 headed stud blocks 120 and 121,'which form guiding pivots to direct the motion of the l upwardly extending shift links 118 and 119 when they are shifted in the platen shifting operation. The upper ends of the shift links 118 ind 119 are bifurcated and c0- operate with pin studs 122, which are fixedly mounted in the side bars 1 and 2 respectively The shift link 119 is provided on its upper end with a la ch member 125. which prevents the side bars, carriage mechanism, ribbon mechanism, etc., from being accidentally folded when the machine is care lessly lifted and turned upside down. The front edge of the shift link 119 is bent over to form a stop which stop is adapted to cooperate with either of the adjustable stop screws 111 and 112, depending upon which scrc .\.,is po tinned in the path of the stop. The cam face 111 on the cam actuated stop member 10 is maintained in engagement with the pm on the key level- 100. by ineansof .leaf spring 127,'rfhich bears upon the rear face of the cam actuated stop 4 member, and is attached at its other end to the rear'wall of the machine frame.

From' -the hereinbefore described nicchanisnis; it will be noted that the ribbon spools are carried upoathe side bar which form a folding support for the earrings bod,

feed mechanism, em, and which bars are pivoted directly to the machine frame.

Therefore, when the carriage and actuated mechanisms are -folded over. the ribbon spools, and the ribbon mechanism is also foldd and occupies g1 relationship over lilo keys of tho key board, which is anbstontially that illustrated in Fig. .l, Fllitllfil'n'inlii, tho ribbonnpools and .tho attonding aotuoting mechanisms, zn'os'hifljed with the pliitoi'i c211- i'iugo iln'ongh are, the 'oontoi' of wliioh in 11 point of tho nnzoliino liinn'io, when the platen coli'i'ingo and alimulunt uieolninioinn are shifted from uppor lo lower case.

Having thus desoi'ibod my ll'lifintiifil'i w s I claim, now and deaii'o to secure by Lot tens Pfllelll; is:-'

1. In a typowi'iting rnzioliiine, nation of a machine home, side burs pivotally mounted upon said machine frame, can? riuge mechanism mount d upon said side bill'S, ribbon spool CulllOljl. by said. side bilL'S, moans for shi. 'ng said ribbon spools and oun'i: mechanism to upper and. lower cause, vol-Li oily (extending lover links curried by said shifting? mochzniisn'i, boll crank dog ooi'i-ioi's rim-on l to ho ootuotod by said vorthe. oo1nliiling lover links, hey levers mounted in said nnuslnno Ea-nine, operative means C(llllllfCllIlg soul key lovers and said ti tally ox we Vex-ti folly extending lev i links, and operativo moans: omn'iooiing aid hull cizinli' dog" omi'ioi's with. nuid i'ihhon spools, SlllN-llilfh tiollfv no dosoi'il'ioifi. 2. .ln :1 r vpoui'iting; uuufhiiiuz, the oornl):- notion of n nniohino 'l i'omo, sido liars pi ob ally mounlod upon nuid muohine 'fmmo, cur- V rings nnchunisni com-led by said side burs Illlllflll EiiHHJlS inminliod upon sold burs, key lovers mounted in said nuichino ii'rznno a universal bur oxlondino over said key lovers, bull vi'onli'. nion'iho links connecting said boll crank members; with said universal liar, and opoi'utivo iii-eons connecting said holl or" with said ribbon spools, sub-- Stonliolly :isdosci-ihod.

in, u typou'i-itiugg *nzurhinm Hie oonibi rmtion of :1 machine linmo. side lion-.5 pivotolly mounted upon Sflifl llluflllllii 'liumo ribbon spools mouniod upon said side lMU'S. finger keys, typo llfll'S. i-oiinooliions l)oh\ eon 821' lilioy lovers and l typo lmi'n, the up'pm' ends ol sold ('(JUWCUOIIS being: 'nm'mollj below the. upnor' o lflos ol' the sidos of tho n'nu'rliino 'l'i'nino, :1 universal hm mounted over said l-to) hum-s but out of contact than-w with. and opor-itiw moons cmincotiug; said kov levers and amid l'llJllOll spools, suhstun tiully doscril; i ;'l.

l. in alypowi'iiing mmhine. tho ('omhinotion of a ll'lilfil'lll'li li'umoi side lmrs pivot iilli-inounted upon soid mnohino i i-mint. o: lriagoimuol1"' o cox-rind lryoaid side lnnsz, key levei's mounted in said n'nichino li'znilo moans .fmr shifting said side born to upper and lower case positions, ribbon spools mounted upon said side hairs o universal liar mounlod in operative relation lIOlClllllout. of oontziol; "with said lmylovoz's, {and connecting, 1. cans between universal h ribbon spools, sold connecting n l-omnles mounted upon lgho to having inwowl y and noting arms, suhsloonioily n oh i n lii'm Nil-{i011 in i :liine iron] 2 no. inoifo u upon said ll? ,lilno ninohun' upon.

i in

Mill lI'l llJuii .iisin to up I :1 i'oi't'ioullv amending 7 carried by said fil'lll ljillg inoolnmiszn, onuzn Ell 3 moons oonnool 11g id i'ol'lioull i l- 111;: lover linln-s win; ooid rihhon spool My lover's niounilod in said nnichino fial'l'un iii/no opoi'ziitivoly ooi'inooteijl with noid li'uy' lovers, o universal bur extending over said am he lawns and out of Contact; thorowitln urul opoi'otaivo means for oonnootiug said uuiwysol bar with said voi'ticull extending lover links, said operati e moans inohuling hoil iniunlzs nunmlt-d upon. 1hr: top of 55 lo 95. po io; o, id lowing inuzudl i' and dov'riwzii'i projocting 5mm; substantially o ilosori 3. in i! iy'pou'ritim moohino of tho i i; in o, lho ooinh otion ol :1 i'l'liltililli: i one nidi hair's 'piiotull v nuiun'llod lo lho loo upper portion of said .i'nuchi M30 moohonism on ed lahou :ioools mounlijed 11 means ioz' opoioling;

in :iun'ino said side lJlll" are to: n onnss'lor sl ing mid ('zll'll;

and said. ribbon on iiln'oi 1 of on on: to posuion soul ram-1'1"" 1T} ninn': for upper mid lower (3:150 printing substantially as (lL'SCIlbQd. 11.

mounted upon sold hollow malty HllllSllIlll-- 12o tizilly as dosoi-iliod.

i In :i, 1" V]7P\'\'ll .l11f, lunch no: tho m'nnhiinu lion of o muoliino li'ome siilo ha 5 pi volts-lily mounted upon mid inoohne. li'omo voi'lioollv oxlond ngi :hufts fif-IQ'. lv mouulr-d upon said side; bar's hollow shafts mounfw for rotation upon said fixedly mounlo l'ullts. ratchet wheels fixedly mounted upon rewind hollow shafts, i'ihhon spools mouni'i-d 1 02' r0- tation upon naid llollov' simila woman for 13G 

